| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.jsecurity.authz.aop; |
| |
| import org.jsecurity.aop.AnnotationMethodInterceptor; |
| import org.jsecurity.aop.MethodInvocation; |
| import org.jsecurity.authz.AuthorizationException; |
| |
| /** |
| * An <tt>AnnotationMethodInterceptor</tt> that asserts the calling code is authorized to execute the method |
| * before allowing the invocation to continue by inspecting code annotations to perform an access control check. |
| * |
| * @author Les Hazlewood |
| * @since 0.1 |
| */ |
| public abstract class AuthorizingAnnotationMethodInterceptor extends AnnotationMethodInterceptor { |
| |
| /** |
| * Constructor that ensures the internal <code>handler</code> is set which will be used to perform the |
| * authorization assertion checks when a supported annotation is encountered. |
| * @param handler the internal <code>handler</code> used to perform authorization assertion checks when a |
| * supported annotation is encountered. |
| */ |
| public AuthorizingAnnotationMethodInterceptor( AuthorizingAnnotationHandler handler ) { |
| super(handler); |
| } |
| |
| /** |
| * Ensures the <code>methodInvocation</code> is allowed to execute first before proceeding by calling the |
| * {@link #assertAuthorized(org.jsecurity.aop.MethodInvocation) assertAuthorized} method first. |
| * |
| * @param methodInvocation the method invocation to check for authorization prior to allowing it to proceed/execute. |
| * @return the return value from the method invocation (the value of {@link org.jsecurity.aop.MethodInvocation#proceed() MethodInvocation.proceed()}). |
| * @throws AuthorizationException if the <code>MethodInvocation</code> is not allowed to proceed. |
| * @throws Throwable if any other error occurs. |
| */ |
| public Object invoke(MethodInvocation methodInvocation) throws Throwable { |
| assertAuthorized(methodInvocation); |
| return methodInvocation.proceed(); |
| } |
| |
| /** |
| * Ensures the calling Subject is authorized to execute the specified <code>MethodInvocation</code>. |
| * <p/> |
| * As this is an AnnotationMethodInterceptor, this implementation merely delegates to the internal |
| * {@link AuthorizingAnnotationHandler AuthorizingAnnotationHandler} by first acquiring the annotation by |
| * calling {@link #getAnnotation(MethodInvocation) getAnnotation(methodInvocation)} and then calls |
| * {@link AuthorizingAnnotationHandler#assertAuthorized(java.lang.annotation.Annotation) handler.assertAuthorized(annotation)}. |
| * |
| * @param mi the <code>MethodInvocation</code> to check to see if it is allowed to proceed/execute. |
| * @throws AuthorizationException if the method invocation is not allowed to continue/execute. |
| */ |
| public void assertAuthorized(MethodInvocation mi) throws AuthorizationException { |
| ((AuthorizingAnnotationHandler)getHandler()).assertAuthorized(getAnnotation(mi)); |
| } |
| } |